Worth reading but not as a beginning (Or intermediate) text. I'll highllight some of his key points, note some problems, and then give my own thoughts.
Van Til's method can be summarized as thinking God's thoughts after him in an analogical way (we receptively reconstruct God's own preinterpreted facts). He also builds his system around the following:
1) God's being and knowledge are coterminous. If God’s knowledge is not coterminous with his being, then it is a correlative of his being. This being is then given a potentiality of its own. No more internally complete knowledge. Hence the open and finite god of non-Reformed systems.
2) The principle of individuation lie withing the Godhead. Only there are facts correlative and brute factuality ruled out.
3) Van Til struggles with the 1 and 3 of the Godhead, particularly in terminology, but I think he is making steps forward and his difficulty is no different from Augustine’s.
Persons are mutually exhaustive of each other, but what does that mean?
he says we “speak of God as a person” (220). Is this necessarily modalism? Maybe not. Whenever God confronts us in Scripture, he speaks as one person. That could be what Van Til means.
Before we attack Van Til, we must acknowledge that there really isn’t a good definition of person. Indeed, for Eastern Patristic thought there cannot be a definition of person, because a person is what is uniquely particular about an individual and resists a universal definition.
Even more, Patristic definitions of person, such as they were, did not include self-consciousness and mind. Modern definitions of persons do. This isn’t to say the latter is correct, but it does highlight our problem today of speaking about persons.
4) Beware of Beginning with Bad Abstractions. We should not think of “Being” in an abstract, empty way.
An abstract “way of negation” is a convenient tool for the sinner to remove the positive demands God makes on him. If one uses the way of negation before the way of eminence (ala Rome), then one ends up with a finite god.
We lose the aseity of God when we begin with abstract concepts of being. Such abstractness makes God/being a correlative with other being(s).
If we “negate” simply by removing the creatureliness of a property--time and space-- and then applying that to God, we do not get the infinity of god. We get emptiness (211)
Conclusion
This book suffers from the usual defects, if such they are. He moves too quickly and key points aren't always elucidated. Still, if you work through what he is saying and continually reference Greek thought and Bavinck, many gems are within.